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Progressive Suspension Monotube Standard Replacement Fork Cartridge Kit - 31-2500

  • Part #:
    584008
  • Manufacturer Part #:
    31-2500

MSRP Price: $399.95

Our Price: $359.96

You Save:
$39.99 (10%)
4 on Hand

Overview of Progressive Suspension Monotube Standard Replacement Fork Cartridge Kit - 31-2500

  • Converts dual damper rod and damper rod/cartridge forks (02-05 models) to high-performance cartridge forks
  • A pair of high-performance, gas-charged mono-tube fork cartridges are included
  • Resistance to front brake dive, front end stability, cornering and bottoming control are improved
  • Direct internal component replacement for all FLT/FLHT/FLHR/FLHX/FLTR 97-13 models
  • Modification of forks is not required
  • Made in the U.S.A.

Specs for Progressive Suspension Monotube Standard Replacement Fork Cartridge Kit - 31-2500

Type Fork Cartridge
Units Kit
Weight 7.90 lbs

Cross reference number(s):

04140370

Specs for Progressive Suspension Monotube Standard Replacement Fork Cartridge Kit - 31-2500

Type Fork Cartridge
Units Kit
Weight 7.90 lbs

Fitment for Progressive Suspension Monotube Standard Replacement Fork Cartridge Kit - 31-2500

See if this part fits your ride

Part 584008 fits the following machines

Harley-Davidson
  • 2013 Harley-Davidson Electra Glide Classic - FLHTC
  • 2012 Harley-Davidson Electra Glide Classic - FLHTC
  • 2011 Harley-Davidson Electra Glide Classic - FLHTC
  • 2010 Harley-Davidson Electra Glide Classic - FLHTC
  • 2009 Harley-Davidson Electra Glide Classic - FLHTC
  • 2005 Harley-Davidson Electra Glide Classic - FLHTC
  • 2004 Harley-Davidson Electra Glide Classic - FLHTC
  • 2003 Harley-Davidson Electra Glide Classic - FLHTC
  • 2002 Harley-Davidson Electra Glide Classic - FLHTC
  • 2001 Harley-Davidson Electra Glide Classic - FLHTC
  • 2000 Harley-Davidson Electra Glide Classic - FLHTC
  • 1999 Harley-Davidson Electra Glide Classic - FLHTC
  • 1998 Harley-Davidson Electra Glide Classic - FLHTC
  • 1997 Harley-Davidson Electra Glide Classic - FLHTC
  • 2006 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 2005 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 2004 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 2003 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 2002 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 2001 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 2000 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 1999 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 1998 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 1997 Harley-Davidson Electra Glide Classic Injected - FLHTC I
  • 2009 Harley-Davidson Electra Glide Standard - FLHT
  • 2006 Harley-Davidson Electra Glide Standard - FLHT
  • 2005 Harley-Davidson Electra Glide Standard - FLHT
  • 2004 Harley-Davidson Electra Glide Standard - FLHT
  • 2003 Harley-Davidson Electra Glide Standard - FLHT
  • 2002 Harley-Davidson Electra Glide Standard - FLHT
  • 2001 Harley-Davidson Electra Glide Standard - FLHT
  • 2000 Harley-Davidson Electra Glide Standard - FLHT
  • 1999 Harley-Davidson Electra Glide Standard - FLHT
  • 1998 Harley-Davidson Electra Glide Standard - FLHT
  • 1997 Harley-Davidson Electra Glide Standard - FLHT
  • 2008 Harley-Davidson Electra Glide Standard (EFI) - FLHT
  • 2007 Harley-Davidson Electra Glide Standard (EFI) - FLHT
  • 2006 Harley-Davidson Electra Glide Standard Injected - FLHT I
  • 2005 Harley-Davidson Electra Glide Standard Injected - FLHT I
  • 2004 Harley-Davidson Electra Glide Standard Injected - FLHT I
  • 2003 Harley-Davidson Electra Glide Standard Injected - FLHT I
  • 2013 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2012 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2011 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2010 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2009 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1999 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1998 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 1997 Harley-Davidson Electra Glide Ultra Classic - FLHTCU
  • 2008 Harley-Davidson Electra Glide Ultra Classic (EFI) - FLHTCU
  • 2007 Harley-Davidson Electra Glide Ultra Classic (EFI) - FLHTCU
  • 2006 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 2005 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 2004 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 2003 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 2002 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 2001 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 2000 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 1999 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 1998 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 1997 Harley-Davidson Electra Glide Ultra Classic Injected - FLHTCU I
  • 2013 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2012 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2011 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2010 Harley-Davidson Electra Glide Ultra Limited - FLHTK
  • 2009 Harley-Davidson Road Glide - FLTR
  • 2002 Harley-Davidson Road Glide - FLTR
  • 2001 Harley-Davidson Road Glide - FLTR
  • 2000 Harley-Davidson Road Glide - FLTR
  • 1999 Harley-Davidson Road Glide - FLTR
  • 1998 Harley-Davidson Road Glide - FLTR
  • 2008 Harley-Davidson Road Glide (EFI) - FLTR
  • 2007 Harley-Davidson Road Glide (EFI) - FLTR
  • 2013 Harley-Davidson Road Glide Custom - FLTRX
  • 2012 Harley-Davidson Road Glide Custom - FLTRX
  • 2011 Harley-Davidson Road Glide Custom - FLTRX
  • 2010 Harley-Davidson Road Glide Custom - FLTRX
  • 2006 Harley-Davidson Road Glide Injected - FLTR I
  • 2005 Harley-Davidson Road Glide Injected - FLTR I
  • 2004 Harley-Davidson Road Glide Injected - FLTR I
  • 2003 Harley-Davidson Road Glide Injected - FLTR I
  • 2002 Harley-Davidson Road Glide Injected - FLTR I
  • 2001 Harley-Davidson Road Glide Injected - FLTR I
  • 2000 Harley-Davidson Road Glide Injected - FLTR I
  • 1999 Harley-Davidson Road Glide Injected - FLTR I
  • 1998 Harley-Davidson Road Glide Injected - FLTR I
  • 2013 Harley-Davidson Road Glide Ultra - FLTRU
  • 2012 Harley-Davidson Road Glide Ultra - FLTRU
  • 2011 Harley-Davidson Road Glide Ultra - FLTRU
  • 2013 Harley-Davidson Road King - FLHR
  • 2012 Harley-Davidson Road King - FLHR
  • 2011 Harley-Davidson Road King - FLHR
  • 2010 Harley-Davidson Road King - FLHR
  • 2009 Harley-Davidson Road King - FLHR
  • 2006 Harley-Davidson Road King - FLHR
  • 2005 Harley-Davidson Road King - FLHR
  • 2004 Harley-Davidson Road King - FLHR
  • 2003 Harley-Davidson Road King - FLHR
  • 2002 Harley-Davidson Road King - FLHR
  • 2001 Harley-Davidson Road King - FLHR
  • 2000 Harley-Davidson Road King - FLHR
  • 1999 Harley-Davidson Road King - FLHR
  • 1998 Harley-Davidson Road King - FLHR
  • 1997 Harley-Davidson Road King - FLHR
  • 2008 Harley-Davidson Road King (EFI) - FLHR
  • 2007 Harley-Davidson Road King (EFI) - FLHR
  • 2013 Harley-Davidson Road King Classic - FLHRC
  • 2012 Harley-Davidson Road King Classic - FLHRC
  • 2011 Harley-Davidson Road King Classic - FLHRC
  • 2010 Harley-Davidson Road King Classic - FLHRC
  • 2009 Harley-Davidson Road King Classic - FLHRC
  • 2008 Harley-Davidson Road King Classic (EFI) - FLHRC
  • 2007 Harley-Davidson Road King Classic (EFI) - FLHRC
  • 2006 Harley-Davidson Road King Classic Injected - FLHRC I
  • 2005 Harley-Davidson Road King Classic Injected - FLHRC I
  • 2004 Harley-Davidson Road King Classic Injected - FLHRC I
  • 2003 Harley-Davidson Road King Classic Injected - FLHRC I
  • 2002 Harley-Davidson Road King Classic Injected - FLHRC I
  • 2001 Harley-Davidson Road King Classic Injected - FLHRC I
  • 2000 Harley-Davidson Road King Classic Injected - FLHRC I
  • 1999 Harley-Davidson Road King Classic Injected - FLHRC I
  • 1998 Harley-Davidson Road King Classic Injected - FLHRC I
  • 2006 Harley-Davidson Road King Custom - FLHRS
  • 2005 Harley-Davidson Road King Custom - FLHRS
  • 2004 Harley-Davidson Road King Custom - FLHRS
  • 2007 Harley-Davidson Road King Custom (EFI) - FLHRS
  • 2006 Harley-Davidson Road King Custom Injected - FLHRS I
  • 2005 Harley-Davidson Road King Custom Injected - FLHRS I
  • 2004 Harley-Davidson Road King Custom Injected - FLHRS I
  • 2006 Harley-Davidson Road King Injected - FLHR I
  • 2005 Harley-Davidson Road King Injected - FLHR I
  • 2004 Harley-Davidson Road King Injected - FLHR I
  • 2003 Harley-Davidson Road King Injected - FLHR I
  • 2002 Harley-Davidson Road King Injected - FLHR I
  • 2001 Harley-Davidson Road King Injected - FLHR I
  • 2000 Harley-Davidson Road King Injected - FLHR I
  • 1999 Harley-Davidson Road King Injected - FLHR I
  • 1998 Harley-Davidson Road King Injected - FLHR I
  • 1997 Harley-Davidson Road King Injected - FLHR I
  • 2013 Harley-Davidson Street Glide - FLHX
  • 2012 Harley-Davidson Street Glide - FLHX
  • 2011 Harley-Davidson Street Glide - FLHX
  • 2010 Harley-Davidson Street Glide - FLHX
  • 2009 Harley-Davidson Street Glide - FLHX
  • 2006 Harley-Davidson Street Glide - FLHX
  • 2008 Harley-Davidson Street Glide (EFI) - FLHX
  • 2007 Harley-Davidson Street Glide (EFI) - FLHX
  • 2006 Harley-Davidson Street Glide Injected - FLHX I
4.4 / 5.0
7 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
6
0
0
0
1
Finish
3.0 / 5
Fit
4.3 / 5
Quality
5.0 / 5
Style
5.0 / 5
Value
4.2 / 5
Would you recommend this product?
Yes (1)
No (1)
Nice
This kit was easy to install if you have a good set of tools and knowledge of Harley fork systems. Good, clear instructions. I have the style Harley that had a cartridge in the left tube and conventional damping in the right. I was never happy with it, and a real pain to change fork oil. This kit puts a sealed cartridge in both fork tubes. The ride quality is very much improved, especially on brake dive and very rough roads. You won't be disappointed with this.
March 10, 2016
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
monotube
just installed in 04 roadglide 1000 % better than the old harley system not an easy install you better have good tools but glad i final spent the money took a good 5 hrs
August 7, 2010
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
Completely different bike!!!
I just installed this kit in my 2005 FLHTPI and its a new bike! I have a small lip on my driveway and used to dread going over that thing even at slow speeds. I couldn't wait to try it with the cartridges installed and I have to say, I'm more than pleased. Couldn't even tell I went over it! The ride is smooth, on heavy braking the nose maybe drops an inch and stays straight and true. I have a 2002 VTX 1800C and I would be amazed at how much more stable that bike is to the Harley. Now, with the cartridges installed its nearly a neck in neck tie for stability and rideability.

Installation wasn't too bad but I'm pretty mechanically inclined. Make sure you have an open end wrench big enough to take the top fork cap off (>1-1/4").

Now I just have to steal......errr......borrow from my checkbook to buy the rear shocks to complete the setup.

You will not be disappointed with this purchase/upgrade!!
September 23, 2010
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
monotubes
installed in 04 roadglide 1000% better than original stock forks did all they said happy took about 4 hrs for total job fairing allways a n issue
August 17, 2010
Fit
5 / 5
Quality
5 / 5
Style
5 / 5
Value
5 / 5
great product
Highly recommend these monotube drop in's. It really stiffens the front end up.
March 29, 2011
Finish
5 / 5
Fit
5 / 5
Value
4 / 5
Would you recommend this product?
Yes
Huge difference. Works great with 444
User submitted image
Added Sep 29, 2017
September 29, 2017
Purchased
2 months ago
Finish
1 / 5
Fit
1 / 5
Value
1 / 5
Would you recommend this product?
No
Shocks Failed
Shocks failed with a broken cartridge. I was put at the back of the line with a warranty claim. This was on 2/20/17 it is now 5/5/17. I still have no answers. Their customer service is a joke! Their old customers are shown the back door. Good luck to anyone who buys their products. They could care less about you once they have your money! They made me mark one star. If there would have been a zero, that's what they would have gotten. These people caused me to not be able to ride my bike!
May 4, 2017
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 2 questions Browse 2 questions and 7 answers
Do u use any fork oil at all with these mono tubes?
Brian on Feb 12, 2017
BEST ANSWER: I put a little in just so they don't rust up but from what I was told you don't have too
WILL THESE FIT FORKS WITH AIR SUSPENSION ?
Rick B on Jul 7, 2017
BEST ANSWER: If you are asking about using monotubes in a Harley touring bike with the external air reservoir (air fitting on handlebar or crash bar), the answer is "yes and no." Yes in the sense that the monotubes can be installed on these bikes. Note, however, that this specific kit, 31-2500, is for 1997-later bikes; you would need the 31-2508 kit (also stocked by DK) if your bike is a 1996 or earlier. Now for the "no" part: the monotubes are not set up to use the air system (the monotube replaces the top fork tube cap), so you'll lose the air-adjustability. The good news is, you probably won't miss it. The monotubes are much better than the stock damper-rod system, and they resist front-end dive under braking as well as the "electro-pneumatic" Harley system (I say this from experience).
Monotube Fork Cartridge Kit - 31-2508
Monotube Fork Cartridge Kit - 31-2508

Instructions and Manuals for Progressive Suspension Monotube Standard Replacement Fork Cartridge Kit - 31-2500

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